Thanks for your comments Karen. Here is a list of my equipment. However, my newest and for now favorite lens is the 180mm Macro.
Canon EF 16-35mm f/2.8 L II USM
Canon EF 24-105mm f/4 L IS USM
Canon EF 70-200mm f/2.8 L IS USM
Canon EF 28-135mm f/3.5-5.6 IS USM
Canon EF 180mm f/3.5 L Macro USM